<!DOCTYPE html>
<!-- file : mytemp.html -->
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    {% if x > 0 %}
    <h1>{{x}}是大于零</h1>
    {% elif x == 0 %}
    <h1>{{x}}是等于零</h1>
    {% elif x < 0 %}
    <h1>{{x}}是小于零</h1>
    {% endif %}
</body>
</html>



